19817338640

Names of 19817338640

• Cardinal: 19817338640 can be written as Nineteen billion, eight hundred seventeen million, three hundred thirty-eight thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.981733864 × 10¹⁰

Factors of 19817338640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 17514

Divisors of 19817338640

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 40 44 55 80 88 110 176 220 440 880 1399 2798 5596 6995 11192 13990 15389 16097 22384 27980 30778 32194 55960 61556 64388 76945 80485 111920 123112 128776 153890 160970 177067 246224 257552 307780 321940 354134 615560 643880 708268 885335 1231120 1287760 1416536 1770670 2833072 3541340 7082680 14165360 22519703 45039406 90078812 112598515 180157624 225197030 247716733 360315248 450394060 495433466 900788120 990866932 1238583665 1801576240 1981733864 2477167330 3963467728 4954334660 9908669320 19817338640
• Sum of all divisors σ(n): 50303030400
• Sum of proper divisors (its aliquot sum) s(n): 30485691760
• 19817338640 is an abundant number, because the sum of its proper divisors (30485691760) is greater than itself. Its abundance is 10668353120

Bases of 19817338640

• Binary: 10010011101001101001001011100010000₂
• Hexadecimal: 0x49D349710
• Base-36: 93QQCCW

Squares and roots of 19817338640

• 19817338640 squared (19817338640²) is 392726910772437049600
• 19817338640 cubed (19817338640³) is 7782802183818448990005676544000
• The square root of 19817338640 is 140774.0694872461
• The cube root of 19817338640 is 2706.1286771043

Scales and comparisons

• 19,817,338,640 seconds is equal to 630 years, 6 weeks, 5 days, 8 hours, 17 minutes, 20 seconds.
• To count from 1 to 19,817,338,640 would take you about one thousand, two hundred sixty years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 19817338640 cubic inches would be around 225.5 feet tall.

Recreational maths with 19817338640

• 19817338640 backwards is 04683371891
• The number of decimal digits it has is: 11
• The sum of 19817338640's digits is 50
• More coming soon!